







🔗 Connect with Confidence — Upgrade Your Dust Collection Game!
The POWERTEC 70145 reducer is a precision-engineered dust collection adapter that steps down from a 4-inch outer diameter hose to a 3-inch hose, made from heavy-duty ABS plastic for long-lasting durability and heat resistance up to 176°F. Designed for seamless, secure connections in woodworking, laser engraving, and dryer vent systems, it enhances airflow efficiency and withstands abrasive workshop conditions.





| ASIN | B00M3IT378 |
| Batteries Included? | No |
| Batteries Required? | No |
| Best Sellers Rank | #28,551 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #36 in Vacuum & Dust Collector Replacement Parts |
| Brand | POWERTEC |
| Color | 4" to 3" Reducer |
| Connector Type | Reducer |
| Customer Reviews | 4.5 4.5 out of 5 stars (870) |
| Date First Available | October 14, 2011 |
| Exterior Finish | ABS |
| Global Trade Identification Number | 00736815005960 |
| Included Components | 4-Inch to 3-Inch Reducer |
| Is Discontinued By Manufacturer | No |
| Item Package Quantity | 1 |
| Item Weight | 3.36 ounces |
| Item dimensions L x W x H | 4.14 x 4.14 x 3.44 inches |
| Item model number | 70145 |
| Manufacturer | Southern Technology LLC |
| Material | ABS plastic |
| Number of Pieces | 1 |
| Part Number | 70145 |
| Product Dimensions | 4.14 x 4.14 x 3.44 inches |
| Size | 1 Count (Pack of 1) |
| Style | 4" to 3" Reducer |
| Thread Size | 3 inches |
| UPC | 736815005960 |
C**L
Perfect fit.
Worked great to fit in the permanent vent hole. Easy to use
B**L
Fit perfect
Perfect little expensive
M**N
Great accessory for the Diesel Heaters
Got a diesel heater with 3" output and balking at the price of 3" vent extensions? 4" is the universal cheap clothes dryer output and vent extensions of any length are available dirt cheap in that size. So what do you do. You get one of those guys for couple of bucks and free yourself to use that ubiquitous ducting. Sure, it would be nice if they used 4" off the hop, but when the design was stolen all those years ago, it must have used a 3" output, so the chinese clones use a 3" output today. This won't flow more air, nor will it restrict, but it will open up a myriad of cheaper options for routing heat. Does that job perfectly and I will get one for each heater.
G**N
Not exactly a 4" inch adapter
It's well made but my problem was that it's exactly 4 inches which is the same size as the fans exhaust outlet, so it really needed to be slightly larger than 4in. to actually fit my fan. But with some scissors, a large round plastic container, contact cement and a few ty-wraps and duct tape, problem solved. It a good thing it's not in my front window, but for laying in my bathroom ceiling it works great! The 3 in. side fit the exhaust duct fine, it's strong enough & the price is right!
R**J
Worked okay
This worked perfect for what I bought it for
M**E
Perfect for my laser
Worked perfectly for my WeCreat Vista 10 exhaust hose. I previously purchased a dryer window vent kit that I used for my Glowforge Aura which has a much larger hose. The opening of the window vent was much too large for the hose of my Vista. This reducer helped tremendously !
F**A
Dimensions not quite right, but can be made to work (maybe)
The dimensions were almost right. It can be made to work, but only with some hefty persuasion from a large rubber mallet. Maybe mine was slightly defective? If your application does not allow for hammering, this might not work for you.
M**N
Greatly simplified the process.
The perfect fitting to transition from 4" to 3" dust collection.
M**A
Produto fabricado com qualidade
P**N
Works and fits. Priced fair
C**S
perfect size as seen
A**A
Worked perfect
C**K
Used it to adapt my 3" clothes dryer exhaust to a 4" indoor dryer venting kit!
Trustpilot
2 months ago
1 month ago